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Simulated remediation system and method for groundwater containing 1,2-dichloroethane and sulfate

A dichloroethane and repair method technology, applied in chemical instruments and methods, contaminated groundwater/leachate treatment, water pollutants, etc., can solve the high pH requirements of the reaction system, chemical repair methods and repair system application effects Unsatisfactory, poor system operation stability and other problems, to achieve the effect of low ecological environment risk, low secondary pollution and high safety

Active Publication Date: 2022-07-05
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a simulated repair system and method for groundwater containing 1,2-dichloroethane and sulfate, to solve the problem of unsatisfactory application effects of existing chemical repair methods and repair systems, poor system operation stability, and poor response to reactions. Problems such as high system pH requirements

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  • Simulated remediation system and method for groundwater containing 1,2-dichloroethane and sulfate
  • Simulated remediation system and method for groundwater containing 1,2-dichloroethane and sulfate
  • Simulated remediation system and method for groundwater containing 1,2-dichloroethane and sulfate

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[0059] The present invention will be further elaborated below in conjunction with the examples, and the following examples are only for illustration and do not limit the present invention in any way.

[0060] 1,2-Dichloroethane (1,2-Dichloroethane) is a colorless and transparent oily liquid with a chloroform-like odor. It is a relatively common volatile chlorinated organic pollutant with a simpler structure in groundwater; 1,2 -The density of dichloroethane is 1.253g / mL, the relative vapor density (air=1) is 3.35, the solubility is 8.7g / L, the boiling point is 83.5°C, and the vapor pressure is 12mmHg (25°C); it is slightly soluble in water, and can be mixed with ethanol and chloroform , ether miscible. Due to its good physical and chemical properties, 1,2-dichloroethane has been widely used in industrial fields, agricultural fields and living fields, so it is a common volatile and highly toxic chlorinated hydrocarbon organic compound in groundwater. DNAPL represents one of th...

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Abstract

The invention provides a simulated repairing system and method for groundwater containing 1,2-dichloroethane and sulfate. The pollutant migration and transformation section and the pollutant repair section; the sample space layer of the pollutant repair section is, from left to right, an oxide filling layer filled with a mixture of persulfate, tourmaline, pyrite and quartz sand, and the filling layer Desulfurized fill layer of a mixture of tourmaline, quartz sand and sulfate-reducing bacteria. The invention optimizes the pH value and redox potential of the aquifer, improves the oxidizing property of the Fenton-like system and the activity of sulfate-reducing bacteria in the groundwater as a whole, and significantly improves the bioremediation system and chemical oxidation system in the remediation of industrially polluted groundwater. Effectiveness and practicality.

Description

technical field [0001] The invention relates to the technical field of polluted groundwater treatment, in particular to a simulated restoration system and method for groundwater containing 1,2-dichloroethane and sulfate. Background technique [0002] Groundwater is a major participant in the hydrological cycle and is extremely important for urban and rural water supply systems in developing countries. It is an important source of water supply systems and the main source of regionally dispersed water supply systems. With the acceleration of urbanization and industrialization in my country, economic and Rapid population growth, coupled with weak awareness of environmental protection, substandard discharge of sewage, excessive application of pesticides and fertilizers, unreasonable landfilling of garbage, and unscientific management of industrial waste water, etc., lead to groundwater pollution mostly complex pollution, especially The problem of groundwater pollution has become m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/36C02F103/06
CPCC02F1/722C02F1/725C02F3/345C02F1/48C02F2101/36C02F2101/101C02F2103/06Y02A20/20
Inventor 崔海炜靳盛海吕晓立王金翠张英何泽
Owner INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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